getting atomics started in windows. This will break linux.

Change-Id: Icedc97dc7fe3366edde84e61d6e3d40434fc212e
Reviewed-on: http://www.matthewh.me/gerrit/33
Reviewed-by: Matthew Hoggan <mehoggan@gmail.com>
Tested-by: Matthew Hoggan <mehoggan@gmail.com>